(Huawei) Authentic H35-211_V2.5-ENU Dumps - Reduce Your Chances of Failure

(Huawei) Authentic H35-211_V2.5-ENU Dumps – Reduce Your Chances of Failure

Jonnie Karnath2023-05-07T17:47:54+00:00

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Page 1 of 17

1. Which of the following description of GPON Type C dual-homing protection is correct?

Simple networking and easy OLT/ONU management.

The two PON lines between one ONU and two OLTs are in the main and standby state

Branch fiber protection is not supported.

OLT failure will cause service interruption.

2. In the TypeB protection mode, when all ONUs under the PON port are offline, which one of the following options is correct?

The work port will not change and is in a stable state

The device will always perform circular detection of the work port and the protect port until an ONU goes online

After the work port is automatically switched to the protect port, it is in a stable state

After the work port is automatically switched to the protect port, it is in a stable state after switching back to the work port

3. In the CPON network, the power value measured by the optical power meter on the ONU side is higher than the overload power. Which of the following options are possible reason?

The fiber quality is not good.

The light splitting ratio is too small.

The distance between the OLT and the ONU is relatively close.

The fiber optic connector is not clean.

4. Which of the following is not a QOS service model?

Diffserv

Intserv

FIFO service

Best Effort

5. What are the possible reasons for the blurred screen when watching IPTV programs? (Multiple choices)

A speed limit is set on the device

Some key frames are lost during program compression;

The transmit and receive optical power of the device is at a critical value.

Some key frames are lost during line transmission;

6. esight can add an optical splitter to more accurately display the connection relationship of PON. Which of the following statement about the optical splitter is correct? (Multiple choice)

Use esight's automatic topology discovery function to discover optical splitters and their splitting ratios

If the connection relationship between the optical splitter and the OLT or ONU changes, esight cannot automatically sense it, and manual maintenance is required

You can manually add an optical splitter and establish a connection relationship with OLT and ONU equipment

Because the optical splitter is a passive device, esight cannot monitor it

7. The services that the access network system can provide include: narrowband voice service, ISDN service, () and broadband service, etc.

8. Which of the following conditions will not trigger GPON Type B single-homing protection switching?

Multiple ONUs are connected to the optical splitter, and a single ONU is offline

Trunk fiber break

The main PO port of the OLT is faulty

Deterioration of trunk optical cable line quality

9. The buffer size of the priority queue of the egress port reflects the processing capability of burst packets. According to business requirements, the buffer size and the percentage of the buffer depth of each queue can be configured.

True

False

10. In the 10GGPON system, XGEN frames are used to encapsulate data, and the PORT ID is defined as () bits in the XGEN header.

Page 2 of 17

11. OLI needs to classify business flows before traffic scheduling. Which can be used as a means of flow classification? (Multiple choice)

DSCP field of IP packet

The TOS field of the IP packet

The cos field of 802.1P

The EXP field of the MPLS packet

12. In the GPON system, the CAR technology is mainly used to realize the speed limit of the downlink traffic, and the speed limit of the uplink traffic is mainly through the DBA.

True

False

13. Drag and drop question: Configure different priorities according to different businesses.

Please drag and drop it to other corresponding services that need to be configured according to different priorities.

14. In the GPON network, which of the following methods can improve the reliability of the network? (Multiple choice)

Ring network protection scheme

Multi-link uplink protection

Cross-board trunk uplink

Type B

15. The overall design principles of LLD are: (Multiple choice)

Clarify the specific docking parameters of each site

Clear docking parameters

Clear configuration principles

Clarify the specific configuration data of each site

16. In the value-added service general template for configuring ONT on U2000, the WAN port capability of WAN port-by-port management is enabled by default and needs to be changed to disable.

True

False

17. When querying the status of the SIP voice service user port, which item indicates that it is in the off-hook state?

Ringing

Locked

Idle

Offhook

18. For PITP P mode, the VBAS request message is encapsulated in the PADS message and sent to the OLT

True

False

19. In a QoS configuration, the bandwidth in a transmission channel depends on the maximum bandwidth of all links in the same channel.

True

False

20. In the process of implementing QoS for home broadband services, the DBA speed limit function is configured. Where does it take effect?

ONU

OLT

BRAS

ODN

Page 3 of 17

21. If the ONU cannot be found automatically, the possible cause of the failure is? (Multiple choice)

The actual distance from the ONU to the OLT is outside the ranging compensation distance configured by the OL

The PON port is faulty.

The ONU is not powered on.

There are rogue ONUs that interfere with other ONU and cannot work normally.

22. The SIP protocol is a hierarchical protocol, which is divided into 4 layers in total, among which the transaction layer is used to create or cancel the client's transaction

True

False

23. Configure the following commands on the OLT,

huawei (config) #lacp priority

[integer<U><0, 32767>linteger<U><0, 65535>}: 2048

(port<K>Isystem <K> }:system

According to the above configuration, which of the following statement is correct?

After configuration, the system priority of the device is higher than the default value

If the priority of the peer system is also configured as 2048, compare the port priority to determine the active end

Set the LACP priority of the port to 2048

The range of system priority is 0-32767

24. eSisht provides an ONT device replacement function, which can replace a faulty ONT with a new device while retaining the configuration data of the original device.

True

False

25. EA5800/MA5800 only supports IGP-proxy, not IGMP-snooping.

True

False

26. If there is only one ONU under a PON port that cannot be automatically discovered, the possible reason is that the hardware of the ONU is faulty.

True

False

27. The Ethernet port protection group refers to configuring the uplink port of the device as a protection group. Among them, the working port carries services, while the protection port does not carry services and is in a backup state.

True

False

28. When OLT traffic scheduling, which of the following traffic will be marked in green?

Traffic below CIR

Traffic above CIR but below PIR

Flow above PIR

Higher traffic than CBS

29. MSTP protocol is compatible with STP and RSTP, and can make up for the defects of STP and RSTP.

True

False

30. In the following description about the comparison of multicast replication types in GPON multicast services, which options are correct? (Multiple choice)

Single-copy replication is based on multicast user replication

Single-copy replication is based on GPON port replication

Multi-copy replication is based on multicast user replication

Multi-copy replication is based on GPON port replication

Page 4 of 17

31. Which of the following is not an influencing factor for ONU selection? (Multiple choice)

Concurrent Bandwidth Requirements

PON to line protection type

Types and quantities of services that need to be accessed in typical scenarios

OLT system security requirements

32. When the protection group is bound to the BFD session state on the OLT, which of the following protections will be triggered when the uplink of the OLT fails?

TypeB single-homing

Type A

TypeB dual homing

Typec

33. For large-scale POL parks, the ODN network planning scheme recommends a four-point three-line structure.

True

False

34. Enable IGMP-snooping on the second layer. When the switch port receives the IGMP join message, it will listen to the message and add the corresponding port to the multicast group.

True

False

35. When configuring VoIP services, which type of DBA is recommended?

Type1

Type4

Type2

Type3

36. Among the following options, which description about the key technology of XGS-PON is wrong? (Multiple choice)

The function of dynamically adjusting the threshold value allows the OLT to adjust the value at one time when receiving the optical signal to ensure the integrity of the signal.

In order to avoid data collisions that may occur when transmitting data in the upstream direction, the OLT will start the ranging function when the ONU registers for the first time to allocate an equalization delay of 0, and then maintain this parameter value unchanged.

In order to ensure data security, XGS-PON supports the use of A super S encryption algorithm to encrypt the entire sent message.

In order to avoid distortion caused by superimposition of transmitted signals, the optical module on the OLT side needs to have a burst transmission function.

37. PON equipment can implement various 00s strategies such as A, traffic classification, marking, traffic monitoring, and congestion management in the FITX network .

True

False

38. Which part of the nodes in the PON network can be monitored through the eSight system? (Multiple choice)

OLT uplink port

OLT monitoring

ONU line monitoring

ONU monitoring

39. Which of the following descriptions about ODN link attenuation budget is wrong?

The received optical power of the ONT needs to meet the interval requirements of the receiving sensitivity of the optical module

Received optical power = transmitted optical power - 0D path-dependent attenuation

In the design of ODN link attenuation, there is no need to consider certain pro-loss redundancy

The received optical power of the ONT must meet the requirements of the overload optical power range of the optical module

40. In the FTTB/C scenario, the ONU is connected to the phone as an AG device, and there is no sound when the SIP protocol is off-hook. The possible reason is?

There is packet loss in the upper layer network of the olt

The status of the MG interface on the ONU side is abnormal

Voice server failure

The route between ONU and IMS is unreachable

Page 5 of 17

41. When dealing with GPON ODN faults, it is found through testing that the input optical power of the optical splitter is abnormal. Which one is the possible fault point?

Distribution cable

Feeder cable

Optical splitter

ONU

42. Which of the following descriptions about the TACACS protocol is correct?

Does not support authorized use of configuration commands on the router

Authentication and authorization are handled separately

Use UDP

Just encrypt the password field in the authentication message

43. If the multicast service is only deployed in private networks. Which multicast address segment should be preferred for planning?

232.0.0.0/8

224.0.0.0/8

239.0.0.0/8

225.0.0.0/8

44. When configuring the multicast service on the OLT, the multicast VLAN program adopts a static configuration method. Which of the following options can be configured or not?

lgmp program

lgmp prof lle

servlce-port

igmp user

45. In the FITH VoIP service, the call establishment fails and the one-way situation occurs. Which one of the following reasons is impossible?

The quality of the bearer network does not meet the communication requirements

Network failure on the signaling plane to the core network

The local OLT is faulty

The opponent's AG failure

46. Which of the following descriptions about IPTV service data planning is wrong?

Plan the multicast VLAN to realize the replication of the multicast service on the OLT side

Dynamic configuration of multicast program recommendation on the OLT side

The IPTV service is a self-operated closed service of the operator, and a single-layer SVLAN method is recommended

Multicast LA and VOD LAN can use the same SVLAN or different SLAN

47. Which of the following descriptions about the deployment scheme of POL ODN optical distribution points is correct? (Multiple choice)

Feeder, wiring direct welding scheme

The advantage of dividing the feeder section and the distribution section into terminal schemes is that it is convenient for flexible management and later expansion

The disadvantage of directly welding the feeder and wiring is that it will produce a large line attenuation

Feeders and wiring are separately terminated

48. In the GFON network, when the ONU fails, what is the process of replacing the ONU?

Create a new template required for ONU registration, and re-add to access the new ONU

Re-add access to the new ONU

Modify the SN of the ONU that has been registered to be replaced, and access the new ONU

49. Congestion management technologies in OLT mainly include? (Multiple choice)

WRED

WRR

PQ +WRR

50. During the use of GPON network VoIP service, there is noise in the user's call. Which of the following options is the possible cause? (Multiple choice)

Received external electrical interference

The system clock quality is poor

Poor grounding quality of equipment

Poor line quality

Page 6 of 17

51. Which method supports reliability protection in the OLT uplink direction?

Typec

Type A

Link Aggregation

Type B

52. In the FOL network, which of the following network locations have bandwidth bottlenecks? (Multiple choice)

Core switch uplink port

Uplink port of OLT

PON port of OLT

Park exit

53. The rights to watch programs are divided into forbidden rights (forbidden), preview rights (preview), viewing rights (watch), and no rights (idle). When checking and accepting multicast user rights, when the same user is bound to multiple templates, the rights to a certain program in the multiple templates are different. At this time, the user's final rights to the program are determined by the higher-priority rights. Which default permission priority is correct?

forbidden>i e>watch>preview

forbidden>idle>preview watch

forbidden>watch>preview>idle

forbidden>preview watch>idle

54. The downlink data of 10G GP0N is transmitted by broadcasting. The downlink data band is broadcasted to all ONU. The security of the system can be improved by using line encryption. Which one is wrong in the following instructions about trunk line encryption?

For sites with high line security requirements, it is recommended to use the on-line encryption function

In order to prevent the risk of decryption of encrypted encryption, the key replacement technology is used, and the encryption state cannot be updated, and the security is high.

Line encryption algorithm will cause transmission delay

The line encryption algorithm will not increase the load and will not occupy bandwidth

55. In the Type B protection mode, when all ONUs under the PON port are offline, which one of the following options is correct?

The device will keep checking the work port and the protect port until an ONU goes online.

The work port will not change and is in a stable state

After the work port is automatically switched to the protect port, it is switched back to the work port and is in a stable state

After the work port is automatically switched to the protect port, it is in a stable state

56. The relationship between the priority carried by the OLT uplink outgoing message and the priority queue of the outbound port is one-to-one correspondence by default, that is, priority 0-7 corresponds to queue 0-7. When modification is required, it can be realized by changing the priority policy in the traffic template.

True

False

57. An office park project adopts GPON access. The service type and uplink and downlink bandwidth requirements of ONU access are: video backhaul (10Mbps/1Mbps), PC (10 Mbps/50Mbps), printer (1Mbps/1Mbps), AP backhaul Transmission (100 Mbps/400 Mbps), IP phone (2Mbps/2Mbps) and IP video conferencing system (4Mbps/4Mbps).

The system adopts 1:8 splitting, and the reasonable statement about performance planning is?

The concurrent downstream bandwidth of the ONU does not meet the bandwidth requirements of various service types.

The concurrent upstream bandwidth of the ONU meets the bandwidth requirements of various services, so it is not necessary to plan DB

ONU upstream concurrent bandwidth does not meet the bandwidth requirements of various services. Therefore, DBA must be planned. It is recommended to plan Type 3 T -COT for IP telephony, video conferencing and video backhaul, and Type 4 T -COT for AP backhaul and P

CON

The concurrent upstream bandwidth of the ONU meets the bandwidth requirements of various services, but it is recommended to plan TyDe3 type T-coT for IP telephony, video conferencing, video backhaul and backhaul, and Type T-CONT for P

58. Set the ICON T type bound to the IPTV service of an ONT to Type 2, 20M bandwidth, then the maximum IPTV service cannot exceed 20M

True

False

59. The main solutions to MAC address spoofing are? (Multiple choices )

Replace user terminal

Automatically perform MAC address binding

Manually configure a static MAC address

Limit the number of user MAC address learning

60. Which of the following descriptions about TypeC single-homing protection configuration is correct? (Multiple choice)

Service configuration needs to be on the main and standby PON ports

Service configuration only needs to be on the active PON port of the OLT

Service configuration needs to be on the main PON port of the ONU

Service configuration needs to be on the active and standby PON ports of the ONU

Page 7 of 17

61. Which of the following is a required configuration item in the process of configuring traffic templates in the GPOH system?

CIR

PIR

CBs

PBS

62. Which of the following descriptions about the GPON optical work case is wrong?

The bending of optical fiber will cause the optical power to decrease

The light signal is an invisible infrared ray, so it will not cause harm to the person

When the optical power of the line is too large, it may cause the ONT to fail to activate

Connect the Om directly to the optical port of the OLT without passing through the optical splitter, which may damage the optical module

63. For the packet priority processing of the outbound port, it can be mapped or directly set.

Among the following options, which description of the priority processing method is correct?

Regardless of the priority setting method, the corresponding priority must be tag-in-package.

There is a strict one-to-one correspondence between the priority mapping between the outgoing message and the incoming message, and the outer VLAN cannot map the priority of the inner VLA

The priority mapping can be set separately for the inner and outer priorities.

The priority mapping needs to match the corresponding mapping template, and the mapping relationship in the template is fixed.

64. In the GPON system, Huawei recommends not to use level-2 or higher splitting. Which of the following networking are wrong? (Multiple choice)

The first-level spectroscopic 1:32, the second-level spectroscopic 1:16

Primary splitting 1:2, secondary splitting 1:8

First-level splitting 1:8, second-level splitting 1:64

First-level splitting 1:2, second-level splitting 1:16

65. In the OLT+MDU network, configure the ig-snooping mode on the MDU. If a multicast user under the MDU leaves the multicast group (the MDU has multiple multicast users online at the same time), which of the following statements are correct?

When MAC address-based quick leave is enabled for MDU clearcast users on the OLT, other users under the MDU will not be affected.

When MAC address-based quick leave is enabled for MDU multicast users on the OLT, other users under the MDU cannot watch multicast programs normally.

When MAC address-based fast leave is not enabled for DU multicast users on the OLT, other users under the MDU will not be affected.

None of the above is true

66. If a single ONU under a PON port goes online and offline, it may be that the hardware quality of the F port is faulty.

True

False

67. The GPON system can realize the security of Internet service data forwarding. Regarding the description of data security planning, which one is wrong?

The SVLAN on the OLT is recommended to use the QINQ VLAN attribute to facilitate the deployment of security features such as PPPoE+/Opton82, MAC anti-attack/anti-spoofing, etc.

Outer SVLAN can be allocated based on OLT equipment, PON single board or PON port

It is recommended that the value of CVLAN be associated with the PON port, optical splitter and ONU port to ensure the uniqueness of CVLAN and facilitate positioning

Based on refined QoS control and management of users and services, online services should be planned in the way of PUPSPV (per user, per service, per VLAN)

68. About the IGMP agreement. Which of the following statements is correct? (Multiple choice)

In 1GMPv1, there is no formal query router election process defined. The election of the query router depends on the multicast routing protocol used.

A formal query router election process is defined in 1GMPv2, and the 1GMPv2 router with the lowest IP address will be the query router.

There is an inhibitory mechanism in 1GMPv1 but not in IGMPv2.

GMPv3 serves the Source Specific Multicast (SSN) model, allowing the host to specify to receive certain multicast groups sent by certain networks. Compared with the previous version, it increases the control ability of the host, and can specify multicast groups. It is also possible to specify the source of the multicast.

69. The display of IPTV service image of a certain FTTH user is discontinuous and sometimes freezes. Which of the following possible reasons is correct? (Multiple choice)

There is packet loss on the link between OU and OL

The user's OIU has not been successfully registered on the OL

The OT downlink port cannot learn the IAC address of the set-top box.

The planning of the multicast IP address is unreasonable, which conflicts with the multicast MAC address of other users.

70. Deploying Ethernet port protection groups in the upstream direction of the OLT can improve uplink reliability and uplink bandwidth

True

False

Page 8 of 17

71. Under the H.248 protocol, when the local digitmap is configured using the local-digitmap add command, the MG device will first match the local digitmap when receiving numbers, and continue to match the digitmap issued by the MGC if the match fails.

True

False

72. In the ODT link, which of the following reasons may cause optical path failure? (Multiple choice)

The end face of the optical fiber connector is dirty, scratched and L depressed

There is a large bend in the optical fiber

The optical fiber is damaged

Using multimode fiber

73. For SIART-type VLANs, by default, service virtual ports of the same VLAN cannot communicate directly at Layer 2.

True

False

74. POL can carry multiple services on one fiber, including PC, AP backhaul, video backhaul, IP telephony / video conferencing and other IP services, as well as traditional voice and CATV services. The CATV service does not pass through the OLT equipment, but needs to pass through the ONU equipment.

True

False

75. In the Huawei GPON network, what is the receiving sensitivity and overload optical power of the OLT specified by the C1ass B+ type optical module?

8dBm, 0.5dBm

-28dBm, 0.5dBm

0.5dBm, 5dBm

-28dBm, -8dBm

76. The complete SIP message interaction process will include multiple request and response messages. A field can be used in the header field of the SIP message to describe the specific request corresponding to the current response message. This field is?

CALL-ID

Csea

Message body

First line

77. Under IGMP snooping, two users under the OLT order the same program, and the OLT sends two join messages to the multicast router

True

False

78. The content of VLAN design mainly includes the scene description of VLAN allocation, the principle of VLAN allocation, etc. The VLAN here includes? (Multiple choices)

Management VLAN

Dedicated line VLAN

Multicast VLAN

User VLAN

79. After setting alarm customization for an alarm in the NCE system, the alarm reported from different devices will be modified first and then put into the library.

True

False

80. It is necessary to analyze the value of optical power in 0DN and link tests. Which of the following descriptions are correct? (Multiple choice)

The actual value of optical attenuation can be the difference between the uplink optical power or the downlink power on both sides of the measurement point, and the calculated difference is the same.

If the actual optical power value is more than the theoretical value, it indicates that there are abnormal attenuation points in the optical fiber link.

Analyzing the optical power is mainly to compare the actual value calculated by the measurement with the theoretical value to judge the quality of the optical fiber link.

After passing through the optical device or optical fiber in the ODN link, the optical power will have a certain attenuation. Under normal circumstances, the actual value of the optical attenuation should not be much different from the theoretical value.

Page 9 of 17

81. A power access service deploys GPON Type C dual-homing protection, and the state of the protection group and the uplink Ethernet port is determined on the OLT. When the state of the Ethernet port associated with the protection group on the OLT changes to down, which of the following descriptions is incorrect?

The state of the work port on the ONU side changes to standby

OLT communicates with ONU uplink status change

After switching, the service on the ONU is sent to the OLT through the protect port, that is, the service message is transmitted on the protect port

ONU detects link failure and triggers protection switching

82. In order to improve the security of user access, the DHCP Opion2 function is enabled. Which device node adds the DHCP Opion2 field to the sent message?

BRAS

OLT

ONU

83. When planning a DBA, if a user wants to apply for an online service, which type of DBA should be used?

type 4

type 3

type 2

type 1

84. The IGMP version on the OLT is configured as V2. When the OLT receives the igmr v3 join message forwarded from the OnT, what will it do?

Normal forwarding

Send a specific group query message

Send a general group query message

Discard directly

85. Single mode fiber must be used in ODN networks.

True

False

86. When configuring the voice service through the command line, it prompts that the MG interface fails. What are the following possible reasons? (Multiple choice)

Uplink port failure

Parameter configuration error

The device is not grounded

Server failure

87. The live video service needs to obtain a stable delay. In the QoS measurement index, which of the following is the main consideration?

Packet loss rate

Bandwidth

Jitter

Latency

88. OLT products when planning and designing POL 0DN network? (Multiple choice)

Determine the type of PON board and OLT

Determine the type of 0NU

Determine the total number of PON ports required

Determine the number of 0NU connected to a single PON port

89. OLT equipment supports the use of authority templates to control the programs that multicast users can watch.

True

False

90. In the Huawei GPON system, which of the following methods are mainly used to deal with long-emitting rogue ONU? (Multiple choice)

Troubleshoot

Dropped c. to isolate

Detection

Page 10 of 17

91. The second and fourth line audio board of Huawei ONU equipment is ()

92. In ODN network deployment, the home optical cable is generally called a drop cable.

True

False

93. Which of the following descriptions about the protection scope of Type B is correct?

Uplink

OLT-ONU end-to-end line

Branch fiber

Trunk fiber

94. Among the following options, which description about NCE is wrong? (Multiple choice)

Based on the different providers of physical equipment, NCE deployment scenarios are divided into public cloud and private cloud.

NCE is located at the analysis layer of the cloud network. It collects user performance data and analyzes and predicts service failures based on big data analysis.

NCE connects with OSS through the development of northbound interfaces to realize rapid customized development of the application layer.

The different deployment scenarios of NCE are based on the distinction between physical hardware, virtualization environment, and software system provider, and the overall installation time is the same.

95. The optical fiber transmission module in the ONU equipment completes the multiplexing, demultiplexing and () functions.

96. Users report that there is a long delay in changing channels in IPTV. In order to improve the experience of user channel switching, the program pre-join function can be configured. Which of the following configurations can realize program pre-join?

huawei (.config) #naulticast-wlan x Huazei (config-rrvlan x) tizmp program static ip224..

enab1e

huavei (config) #igp progran static ip 224.xx x enable

huavei (confiz) #igmp progran add ip 224.xX x yrejbin enable

huavei (config) #naulticast-vlan x Huaweiiconfig-xvlan x ） ignp progran add ip 224.xx x prejoin enable

97. The effective downstream bandwidth of the GPON PON port is?

1.25G

2.5G

2.2G

98. At present, people pay more and more attention to the reliability of the network, and put forward various regularity requirements for the equipment of the access network, upgrading from the reliability requirements of a single node to the end-to-end reliability requirements.

These requirements include which of the following aspects? (Multiple choice)

Device hardware-level protection requirements

Requirements for uplink wrong path protection

GP ON protection requirements

Device software-level protection requirements

99. When planning Qos, it should be planned reasonably according to the business. Generally, high-priority business adopts the () scheduling mode.

WRR

DRR

100. When dealing with voice faults, it is sometimes necessary to capture packets for fault analysis. If the user ID of the calling user in the captured SIP message is displayed as Sip: [email protected], 50, which is wrong? (Multiple choice)

The server port is 5060

The transport layer protocol uses TLS

The user's phone number is 2270808

The host IP address is 191.169.1.112

Page 11 of 17

101. Which statements about the characteristics of each layer of POL are reasonable? (Multiple choice)

The OLT is used as the aggregation layer device. When two OLTs are configured, the backup can be guaranteed through the interconnection between the two OLTs.

The access layer is close to the information point and provides a variety of access methods. It is required to support security features such as VLAN, IGMP Snooping , ring network avoidance, 802.1x , and port security.

The aggregation layer requires strong forwarding capability, high port density and high reliability.

The aggregation layer supports the " horizontal " flow between users and also provides the "vertical" flow to the core layer.

102. In the Type B protection mode, the port on the Standby side only receives light but does not emit light. When no uplink light is detected for 4 consecutive DBA allocation cycles, an uplink no-light interruption will occur, and then automatic switching will be triggered.

True

False

103. In the IPTV service, which of the following forwarding methods is mainly used for the point-and-point service?

broadcasting

Anycast

Group plug

Unicast

104. Which of the following statements about 10GEPON is correct? (Multiple choice)

10G EPON and EPON frame protocols are compatible.

Compatibility of 10G EPON/EPON, that is, 10G EPONE SONU and 1G EPON ONU can coexist in the same ODN

10G EPON technology follows the IEEE 802.3av standard, supports asymmetric transmission rates of 10Gbit/s downlink and 2.5Gbit/s uplink, and meets high bandwidth

The MPCP protocol of 10G EPON is completely the same as the IPCP protocol of EPO

105. GPON only supports downlink AES-128 encryption, XG-PON supports two-way AES-128 encryption

True

False

106. In order to improve link reliability, the LT device configures the Timedelay protection group through two uplink ports 0/19/0 and 0/20/0. Which of the following commands is optional?

huawei (config) #interface giu 0/19 Huawei (config-if-giu-0/19) hoffline-tx-off-time 0 500

huawei (protect-group-0) hprotect-group member port 0/19/0 role work

huawei (protect-group-0) aprotect-group enable

huawei (config) =protect-group 0 protect-target sth-nni port workmode timedelay

107. In GPON Type c single-homing and dual-homing protection, which description is correct? (Multiple choice)

For OLT Type C dual-homing scenarios, when a component fails, it can automatically switch to another link.

Redundant protection is provided for OLT (dual-homing scenario), ONU PONR port, main optical fiber, optical splitter and distribution optical fiber.

After the recovery switch of the protection group is enabled, when the status of the working members in the protection group returns to normal, the protection group will automatically switch over after the recovery waiting time is over, and the working members will continue to carry services.

Type c protection has higher reliability than Type B protection

108. Which of the following types of DBA bandwidth will reduce the upstream bandwidth of the PON port after the DBA horizontal board is configured and successfully used by the ONT? (Multiple choice)

assure

max

best effort

fixed

109. In the 10G GPON protocol stack, the smallest encapsulation unit is?

GTC

XGEM

TCONT

GEM

110. The Max-Forwards field can be used in the SIP message to solve the loop and avoid endless message forwarding.

True

False

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111. The ITU-T G-984.2 standard defines the protection methods of four lines in the GPON network.

True

False

112. Which of the following descriptions about preventing IP address spoofing is correct?

The bound IP address is obtained from the server 's response message.

After the anti- IP address spoofing is enabled, the online DHCP user service will be interrupted immediately.

After enabling anti- IP address spoofing, the system will disable dynamic MAC address learning.

and anti- MAC Spoofing are mutually exclusive, and only one of them can be selected to enable when protecting users.

113. Which of the following options does not belong to the ODN component of the GPON system?

Optical cable

Optical module

Optical splitter

ODF

114. The IGMP version on the OLT is configured as V3. When the OLT receives the IGMP leave message forwarded from the ONT, what will it do?

Do nothing

Send a general group query message

Normal forwarding

Send a specific group query message

115. An enterprise private line access service deploys GPON Type B single-homing protection. Use the protect-group mobert command to add protection group members to the protection group. Which need to pay more attention? (Multiple choice)

When adding protection group members, you need to add working members first, and then increase protection members

After the protection group is created, the default state of the protection group is enabled

Member ports can be ports on different GPON boards, but must be of the same type of GPoN service board

GPON ports do not support adding protection group members based on boards, only support adding protection group members based on ports

116. Consider 500 broadband users, the concurrent rate is 40%, the penetration rate is 50%, the online bandwidth is 4M, and the duty cycle is 12.5%. When the number of channels is 1 and the coverage rate is 70%, it needs to occupy a bandwidth of 35M.

True

False

117. The traffic suppression function can work on unicast packets and multicast packets, but since broadcast packets are generally sent by equipment at the initial stage of communication, in order not to affect specific communication services, access network equipment does not provide support for broadcast Traffic suppression.

True

False

118. In the GPON system, it is used to protect the security of the data. The OLT can adopt the 512 -bit AES encryption algorithm to realize the security protection of the data.

True

False

119. In the system, () implements call control. Its core technology is switching technology, which completes basic real-time call control and connection control functions.

120. When configuring the IPTV service on the U2000, what templates are included in the IGMP template? (Multiple choice)

Permission template

Multicast user profile

Program templates

Preview parameter template

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121. The number of users under the OLT can also determine whether the VLAN adopts single-layer or double-layer VLAN. When the number of users is small, a single-layer VLAN can be used. When the need to distinguish services and the number of users is less than (), a double-layer VLAN must be used.

122. Unlike U2000, eSight network management cannot view the ranging results of ON U, but it is suitable for viewing the basic information of ONU, such as luminous power.

True

False

123. In the U2000 network management, under the view of the GPON template, the templates that can be seen are:

a) Line template

b) Business template

c) DBA template

d) GPON ONT capability template

e) GPON alarm template

f) MDU SNMP template

abed

abe

abedef

abede

124. When the invitation message sent by user A reaches user B after passing through servers C, D, and E, the order of the server addresses recorded in the VIA field information in the message received by user B is?

C->D->E

E->C->D

E->D->C

C->E->D

125. The ASL board of the Huawei ONU single board is (), which can be connected to 16 automatic telephone lines.

126. For user-side loop problems, the device needs to perform loop detection. Which of the following description is correct? (Multiple choice)

Configure the ring check function on the device

ALT and L

/zone 45821 enable anti- Dos attack, which can prevent loops.

Huawei MA/E45800 does not support ring network detection for uplink ports and user ports

When a ring network occurs on the user interface, a trap notification can be sent. And deactivate the OU or block the P2P port.

127. The GPON port 1+1 redundancy backup feature provides port and optical fiber redundancy protection functions, and the port service interruption time is less than ()ms, making the device more reliable.

500

100

200

128. Multicast VLAN refers to the VLAN carried by multicast data, also known as MVLAN. Any attribute or type of VLAN can be multicast VLAN, including Super VLAN.

True

False

129. X5SFOT technology is adopted in a park project, ONT is used as AP backhaul, and 1:16 optical splitter is used in the project, but only 12 APs are connected to each optical splitter. What is the concurrent downlink bandwidth of AF (Mbps)?

About 400

About 800

About 300

About 600

130. In the PON network, which of the following devices causes the largest optical loss?

Optical splitter

Optical power meter

Adapter

Weld point

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131. In the planning of FTTX access, it is generally possible to configure uplink aggregation to improve the bandwidth and reliability of the uplink of the OLT device. Which of the following statements is correct? (Multiple choice)

The aggregation group can realize cross-board aggregation between two uplink boards

Link aggregation members can also achieve active/standby mode protection

The two port types configured for aggregation must be the same

An aggregation group can realize cross-board aggregation between two Ethernet boards

132. The user accesses the network through PPPOE dial-up, and the "error 678" dial-up failure error occurs when the number is dialed, and the IP address cannot be obtained. The possible reason is?

BRAs have no user address pool configured

LCP negotiation failure

Incorrect username and password

Too many OLT service port access users

133. The ONU on the GPON port frequently goes online and offline, and the OLT reports a large number of ONU signal loss and recovery alarms. Which of the following options are the possible causes? (Multiple choice)

PON port failure

ONU restarts repeatedly

Poor fiber optic line quality

Single board or slot failure

134. Among the following options, which multicast address represents all routers?

244.0.0.1

244.0.0.2

244.0.0.5

244.0.0.9

135. The stages that general network design will go through and their sequence are?

Information collection stage --> planning stage --> network outline design stage --> network detailed design stage --> network deployment design stage

Planning stage --> network outline design stage --> information collection stage --> network detailed design stage --> network deployment design stage

Planning stage --> information collection stage --> network outline design stage --> network detailed design stage --> network deployment design stage

Information collection stage --> planning stage --> network deployment design stage --> network detailed design stage --> network outline design stage

136. When configuring the multicast service, the VLAN carrying the group service must be consistent with the ID of the unicast VLAN

True

False

137. Which of the following descriptions about the basic structure and design ideas of pre-connected OD is wrong?

OD design can take the idea of converging from the information point to the synthesis point

The planning of pre-connection ODT is still based on two points and three lines

Optical splitters are generally integrated in Hubboxz and SubBox and pre-connected

ODl still maintains the traditional tree structure of OD

138. 1. The total downstream bandwidth of the 10G EPON PONI port is the sum of the downstream bandwidth of EPON and the downstream bandwidth of 10GEPON.

True

False

139. Which of the following options can improve the service experience of multicast users when switching channels (shorter switching time)?

When adding a multicast program, disable the prejoin function

Enable the quick leave function when adding a multicast user

When adding a multicast user, enable the preview function

Use a group address with a small value

140. In an LACP link aggregation group, only two uplink ports on the same board can be configured as an aggregation group, and cross-board aggregation groups are not supported.

True

False

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141. Which of the following description of GP ON Type C single-homing protection is correct?

Do not switch back after the working link recovers

Need to configure 2, N optical splitter

Branch fiber breaks will not trigger switching

Both ONU and OLT detect the link status, and decide whether to switch according to the link status

142. When planning a business DBA, if we want to guarantee the bandwidth and share as much bandwidth as possible when the network is idle, which mode should our DBA use?

Type1

Type3

Type2

Type4

143. Which of the following statements about the PITP protocol is wrong?

PITP P mode can also be called PPOE+ mode

The purpose of OPIT persistence is to provide the upper-layer authentication server with the physical location information of the access user. After the BRAS device obtains the user access location information, it can realize the binding authentication of the user account and the access location information to avoid user account authentication. Fraud and Roaming

In PITP VI mode, the user's physical location information will be added to the PPPoE message sent by the user side to cooperate with the upper layer server for user authentication

PITP protocol includes PITP Pi mode and PITP V mode

144. LACF protocol, it is responsible for maintaining the link status. Which of the following conditions change, it will automatically adjust the links in the aggregation group? (Multiple choice)

Physical port status changes

Changes in 1.4CP coordination results with the peer

Board status changes

Logic changes

145. The topological structure of OLT+ONU combined networking can adopt star, chain, () and various mixed topological structures.

146. Which of the following descriptions about the characteristics of the 90L ODN full pre-link solution is correct? (Multiple choice)

Easy to deploy, 100 free exchange.

The optical splitter is installed to intervene in the connection box, and the installation space occupation rate is low

Distributed light splitting, so it is not easy to maintain

Distributed light splitting, saving the number of lines in the home section

147. In the process of ONU forwarding messages, the Layer 2 priority of the message is added according to the deployed policy, and the user-side message received by the ONU has no priority.

True

False

148. In the ont configuration deployment of esight, multiple business templates can be configured, and the parameters that can be set in the multi-service template management tab are? (Multiple choice)

Voice VLAN

ONU type

Number of Ethernet ports

VLAN

Default VLAN

149. Among the following options, which description about NCE-PAN VoIP service configuration is correct?

The FTP service is only used to synchronize NCE and device data.

VLANs added to uplink ports cannot be deleted directly.

The VAS template must be delivered to the device to take effect.

The difference between the VAS template and the VAS template is that the former is for versions after ONT V2, and the latter is for versions before ONT V2.

150. The DHCP Option 82 switch is divided into four levels. Global level, port level, service virtual port level and VLAN level, this function can also be realized without fully opening the switch of each level.

True

False

Page 16 of 17

151. Which of the following descriptions about OTDR is correct? (Multiple choice)

OTDR is a sophisticated optoelectronic integrated instrument made by using Rayleigh scattering and backscattering produced by Fresnel reflection when light is transmitted in optical fiber

It is widely used in the maintenance and construction of optical cable lines

The full English name of OTDR is OpticalTime Domain Reflectometer, which means Optical Time Domain Reflectometer in Chinese

It can test ONU optical power

152. Which of the following are the basic components of ODT? (Multiple choice)

Optical splitter

RJ45 distribution frame

ODF, FDT, FAT

Optical cable, pigtail, jumper

153. If it is necessary to increase the bandwidth of the OLT uplink and to enable protection between the uplinks, which of the following technologies can be used?

MSTP

Ethernet aggregation lacp mode

Ether Aggregation Manual Aggregation Mode

Ethernet port protection group

154. In Layer 2 multicast, how many multicast IP addresses can a multicast MAC address correspond to?

155. In the Huawei U200 management system, when adding access network elements, you can only add them one by one.

True

False

156. In GPON networking, what are the possible reasons why users cannot access the Internet? (Multiple choice)

User terminal or external line failure

Optical path problem

PPPOE dial-up user name or password is wrong

VLAN connection error

157. Among the following options, which ones may cause the interruption of the broadband service of the whole frame OLT? (Multiple choice)

Service board failure

The main control board is faulty

Cyber attacks

Uplink board failure

158. The class D multicast address range is from 224.0.0.0 to 238.255.255.255.

True

False

159. There are three types of basic functional modules for optical cable connection, fiber fusion module, wiring module, and fusion fiber wiring integration module. The splicing, scheduling, and branching devices in ODN are the aggregates of these three basic functional modules and optical splitters. Due to different installation locations and access capacities, their physical forms are different.

True

False

160. In the FTTX network, when planning data for broadband services, which of the following principles is incorrect?

If the outer labels of different PON ports are different, the inner labels can be the same

The same PON port is marked with different outer labels for different services

If the outer labels of different PON ports are the same, the inner labels cannot be the same

The network management should use QinQ VLAN

Page 17 of 17

161. Among the following options, which description about NCE-FAN IPTV service configuration is wrong?

The IGMP version on the OLT is recommended to be no lower than the IGMP version of the ST

The values of multicast VLAN and on-demand VLAN can be different.

The bandwidth in the program template indicates the actual bandwidth occupied by the program.

It is recommended to manually add popular multicast programs and enable the pre-join function to reduce program switching time.

162. What options are used to indicate the priority of IP packets? (Multiple choice)

DSCP

Tos

802.lp

Cos

163. Among the following options, which description about NCE-FAN HSI service configuration is wrong?

The execution time of the template delivery can be set according to business requirements.

In the line template, the actual configurable range of T-CONT is determined by the capability of the terminal equipment.

After the wrong S-VLAN is configured on the service virtual port, it can be changed directly without deleting and rebuilding.

When querying the status of the ONT, if the matching status is displayed as mismatch, the service carried by the ONT is unavailable.

164. In the GPOT network, the power value measured by the optical power meter on the OHU side is higher than the overload optical power. Which of the following options are possible reasons? (Multiple choice)

The splitting ratio is too small

The distance between OLT and ONU is relatively close

The fiber optic connector is not clean

The fiber quality is not good

By Jonnie Karnath Huawei Free Dumps H35-211_V2.5-ENU, H35-211_V2.5-ENU practice test questions, HCIP-Access V2.5, Huawei H35-211_V2.5-ENU free dumps 0 Comments

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